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Confocal microscope projection image of cellular distribution of antisense ODN in 518A2 (A–C) and HEK 293 cells (D–F). Cells were exposed to free antisense ODN (A and D), PFV-encapsulated antisense ODN (B and E) or cationic liposome–antisense ODN complexes (C and F) for 4 h. Scale bar 10 µm.
